Mixing machine



FIG. 1 is a left front perspective view of a mixing machine with the cover open and showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view of the beanie of FIG. 1; and,

FIG. 7 is a left front perspective view with the cover closed. 

CLAIM The ornamental design for a mixing machine, as shown and described. 